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(No Model.)

A. L. DAWSON.

. LAMP. No. 264,633. Patented Sept. 19, 1882.

a INVENTOR:

ATTORNEY S.

UNITED STATES PATENT OFFICE.

ARTEMAS L. DAWSON, OF ELK POINT, DAKOTA TERRITORY, ASSIGNOR OF ONE-HALFTO'OHARLES HOWARD FREEMAN, OF SAME PLACE.

LAMP.

SPECIFICATION forming part of Letters Patent No. 264,633, datedSeptember 19, 1882.

' Application filed March 20,1882. (No model.)

To all whom it may concern:

Be it known that I, ARTEMAS L. DAWSON, of Elk Point, in the county ofUnion, Dakota Territory, have invented a new and useful Improvement inLamps; and I do hereby declare that the following is a full, clear, andexact description of the same.

As usually constructed, lamp bodies or reservoirs are provided with avertical rim or neck around the opening, and metal collars are securedthereon by means of plaster-ofparis or other cement. Such neck'increases the difliculty and cost of casting or molding the lamp-body,and the collars are liable to become loose and detached in consequenceof the cement shrinking and falling out. To obviate these defects, Iadopt the construction and combination of parts hereinafter describedand claimed.

in the accompan 5 in g drawings, Figure 1 is a vertical central sectionof a lam p-reservoir having a collar applied thereto according to myinvention. Figs. 2 and 3 are respectively a vertical section andperspective of the lampcollar in the form it possesses beforeapplication to the reservoir. Fig. 4 is a vertical section illustratingone stage in the application of the collar and packing to the lamp.

The letter A indicates the body or reservoir of the lamp; B, the collar,and O the packing for the latter.

The glass or earthenware body A of the lamp has no neck, the top orportion a in which the opening is formed being horizontal, as shown inFigs. 1, 4, instead of turned up vertically, as usual.

The collar B, Figs. 2 and 3, is constructed of some kind of metal havingsufficient ductility to allow it to be spun or otherwise drawn into therequired form. It has in the first instance the form shown in Figs. 2,3--that is to say, it consists of a tube, 0, provided with an annularlateral flange, d, at one end.

| The collar and packing are applied to the lamp-body as follows: Thepacking O, which consists at the outset of a flat annulus of cloth orfelt, is laid on the lamp-body A, with its circular opening coincidentwith the opening in the lamp. The tube 0 of the collar B is then pusheddown into the opening of the 0 packing O, carrying with it the innerportion of the latter, as represented in Fig. 4. The lower end of thecollar-tube c then projects through the packing into the chamber of thelamp, and the next step is to spread out such lower end horizontally,which is done by means of any suitable tool, so that it assumes theposition shown in Fig. 1. The lower edge of the packing O is necessarilyturned outward at the sametime,and therebycausedtoinclose the edge ofthe lamp-body A around the opening. The flanges of the collar clamp thepacking O firmly in place, and, being compressed, it preventsescape ofoil, and at the sametime forms an elastic cushion between the collarBand lamp- 6 body A, so that the edge of the latter is not liable to bebroken by sudden jars or blows incident to ordinary usage. Moreover, thecollar' cannot become loose or detached, but remains a permanentattachment of the lampbody.

I am aware that bottle-necks have been provided with linings of softmetal, cushioned by fibrous material.

What I claim is-- The combination, with the neckless lampbody A, of themetal collar B and elastic packing 0, the latter two being turned overthe edge of part A, so as to inclose it between them, as shown.

ARTEMAS LORD DAWSON.

Witnesses:

CHARLES HOWARD FREEMAN, ALONZO HASSON.

